trezor.io
Rate this file (Rating : 5 / 5 with 1 votes)
Infrared photography by Jeffrey Klassen
trezor.io

Infrared Photography By Jeffrey Klassen

In infrared photography, the film or image sensor used is sensitive to infrared light. The part of the spectrum used is referred to as near-infrared to distinguish it from far-infrared, which is the domain of thermal imaging. Wavelengths used for photography range from about 700 nm to about 900 nm. Usually an "infrared filter" is used; this lets infrared (IR) light pass through to the camera, but blocks all or most of the visible light spectrum (the filter thus looks black or deep red).
When these filters are used together with infrared-sensitive film or sensors, very interesting "in-camera effects" can be obtained; false-color or black-and-white images with a dreamlike or sometimes lurid appearance known as the "Wood Effect," an effect mainly caused by foliage (such as tree leaves and grass) strongly reflecting in the same way visible light is reflected from snow. There is a small contribution from chlorophyll fluorescence, but this is marginal and is not the real cause of the brightness seen in infrared photographs. The effect is named after the infrared photography pioneer Robert W. Wood, and not after the material wood, which does not strongly reflect infrared.

File information
Filename:284460.jpg
Album name:Art & Creativity
Rating (1 votes):55555
Keywords:#infrared #photography #jeffrey #klassen
Filesize:45 KiB
Date added:Jun 21, 2010
Dimensions:696 x 432 pixels
Displayed:21 times
URL:displayimage.php?pid=284460
Favorites:Add to Favorites